Thread-controller for sewing-machines.



D. S. SEYMOUR.

THREAD CONTROLLER FOR SEWING ,MACHINES.

APPLICATION FILED NOV- 4. 1911.

Patented Oct. 3,1916.

5 SHEETS-SHEETI INVENTOR 5, 5'

A ltomey W/ TNESSES I dud a ERS coy. Pnbmum D. S. SEYMOUR.

THREAD CONTROLLER FOR SEWING MACHINES.

APPLICATION FILED NOV- 4. 19]].

v Patented Oct. 3,1916.

5 SHEETSSHEET 2.

CINE

INVENTOR 5'. 5'

Attorneys WITNESSES D. S. SEYMUUR.

THREAD CONTROLLER FOR SEWING MACHINES.

v Rh Pafented 001;. 3,1916.

5 SHEETS-SHEET 3 INVENTOR My...

Attorneys WITNESSES D. S. SEYMOUR.

THREAD CONTROLLER FOR SEWING MACHINES.

Pz xtented Oct. 3,1916.

5 SHEETS-SHEET 4 N M W 1 5. 5 M

1 200, 6. AFPLICATIO man NOV. 4, 1

v WITNQESSESv I D. S SEYMOUR.

THREAD CONTROLLER FOR SEWING MACHINES.

APPLICATION FILED Nl'jV. 4. l9ll.

Patented Oct. 3, 1916.

5 SHEETS-SHEET 5.

WITNESSES A llorney rm STATES PATENT OFFICE.

DUDLEY S. SEYMOUR, 01? OAK PARIQ ILLINOIS, ASSIGNOR TO UNION SPECIALMACHINE COMIPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

THREAD-CONTROLLER FOB, SEWING -MACHI NES;

Specification of Letters Patent.

Patented Oct. 3, 1916.

To all w ham it may concern Be it known that I, DUDLEY S. SEYMOUR, acitizen of the United States, residing at Oak Park, in the county ofCook, State of Illinois, have invented certain new and usefulImprovements in Thread- Controllers for Sewing-Machines, of which thefollowing is a description, reference being had to the accompanyingdrawing, and to the letters and figures of reference marked thereon.

The invention relates to new and useful improvements in threadcontrollers for sewing machines, and more especially to threadcontrollers for chain stitch sewing machines adapted to operate uponleather or other heavy materials.

An object of the invention is to provide a machine of this type which isconstructed H with an upper rotary shaft, with thread controllingdevices which are automatically operated to draw from the supply varyingamounts of thread in accordance with the thickness of the materialoperated upon.

A further object of the invention is to provide a thread controllingmechanism of the above character, wherein a certain amount-of threadaccording to the thickness of the work, is drawn off and supplied to theneedle independently of the main pull off devices, and stitch-settingmembers.

A further object of the invention is to provide a machine of the abovetype, with a slack thread controller which is operated to take up theslack from the needle on the firstpart of its downward movement, to

again take up the needle thread to assist the needle in drawing up theloops of needle thread of the previous stitch close to the under side ofthe work.

A further object of the invention, is to provide a thread controllingmechanism. of

' the above character, which includes a slack thread controller, whichmay be operated to take up the needle thread on the first part of theupward movement of the needle, and to give slack to the needle until theeye of the needle is well above the material, after which, said slackthread controller cooperates with the needle bar or otherthread drawingdevice in setting the stitch.

These and other objects will in part be obvious, and will in part behereinafter more fully described.

In the drawings which show by way of illustration one embodiment of theinventionz Figure l is a partial vertical section and a partial frontview of a machine having my improvements applied thereto; Fig. 2 1s arear View of the overhanging arm and the thread controlling partsmounted thereon; Fig. 3 is a top plan View of the same; Fig. 4 is an endview of the head of the machine, with the face plate and the end cap forthe cylindrical bed removed; Fig. 5 is a sectional View showing thethread clamping device; Fig. 6 is a diagrammatic view showing the needlethread controller when the needles are at their extreme upper position;F 7 is a similar view when the point of the needle is entering thematerial; Fig. 8 is a similar view when the needle is at the lower endof its stroke; Fig. 9 is a similar view when the needles are leaving thematerial; Fig. 10 is a sectional view through the supporting bracket onthe line 1010 of Fig. 3; and Fig. 11 is a sectional view through thebracket on the line 11'1l of Fig. 3.

The invention as herein illustrated, is shown applied to a sewingmachinewhich consists of a supporting base 1, from which rises a standard 2. Acylindrical bed plate 3 is carried by the standard 2. An overhanging arm4 projects forwardly from the upper end of the standard over thecylindrical bed plate. The main driving shaft 5 extends through theoverhanging arm and is mounted in suitable bearings therein. The needlebar 6 reciprocates in the forward end of the overhanging arm. Saidneedle bar as herein shown, is provided with a plurality of pairs ofneedles 7, 7. The needle bar is connected by a link 8 to a crank 9 onthe end of the main shaft 5, and as said main shaft is rotated, saidneedle bar will be reciprocated. (lotiperating with each pair of needles7, 7, is a looper 10.

These loopers are carried by a looper carrier mounted in the forward endof the cylindrical bed plate, and said loopers are of thethread-carrying type, and move across the line of feed. The constructionof the loopers and the means for operating the same, forms no part ofthe present invention, and will not be further described. The

feeding mechanism consists of the usual feed dog, mounted on a feed bar11, and

said feed dog is arranged to feed the work across the end. of thecylindrical bed plate.

Said feeding mechanism also forms no part of the present invention, andwill not need further description.

Coiiperating with the feed dog is a presser foot 12 which is carried bya presser bar 13. The presser bar 13 is normally held against thematerial by a spring 14, which is of the usual type. On the upper end ofthe presser bar is a collar 15 which carries a laterally projecting lug16. The presser bar may be raised and lowered by the usual hand lever17, or by a lever 18 which is pivoted at 19 to the overhanging arm, andprojects forwardly underneath the lug 16. The other end of the lever isadapted to be connected with a treadle or knee-shift so that when thelever is swung about its pivot the forwardly projecting end will engageunderneath the lug, and raise the presser bar. A spring 20 is secured atone end to a suitable lug on the overhanging arm, and said springnormally holds the forward end of the lever depressed away from the lug16.

An adjustable limiting stop 21 is sup ported by the overhanging arm, andwill limit the downward movement of the lever 18. lVhile I have shown aplurality of needles and the thread controlling mechanism for the sameis constructed so as to receive and handle a thread for each needle, theoperation of the thread controlling mechanism on the plurality ofthreads is the same as upon each individual thread, and therefore in thedescription of the thread-controlling mechanism, I will refer merely toa single needle and the thread therefor.

The needle thread is led from the supply through a thread guiding eye 21mounted on a supporting plate 22 carried by a bracket 23 which isattached to the overhanging arm 4 of the machine. Mounted on said plateis a suitable light tension 24 and also a heavy tension 25. The heavytension consists of disks which are spring-pressed together by a spring26. The upper disk is carried by a stud extending through the plate andthe spring 26 surrounds said stud, and bears at one end against a nut 27on the outer end of the stud and at its other end against the supportingplate. It will be understood that there is a tension 24 and a tension 25for each of the needle threads. The needle thread after leaving thetension is fed between two guiding posts 28. These guiding posts arelocated centrally of the plate, and serve to collect or bring togetherthe four needle threads and guide the same to the thread controllingmembers. When the material is to be taken from the machine, it isdesirable to remove the heavy tension. In order that this may beaccomplished, I have journaled in the bracket 23 a short shaft 29 whichis provided with projecting arms carrying a plate 30, whichextendsunderneath each of the studs 26 of the tension members 25. Theshaft 29 also carries an arm 31 which is adjustably secured upon theshaft and the outer end of the arm 31 lies in the path of a lug 32,carried by the lever 18. When the lever 18 is depressed to lift thepresser foot, the lug 32 will engage the arm 31 and depress the same,which will in turn raise the bar 30 and thus engage the studs of thevarious tensions and relieve the tensions so that the threads may runfreely therethrough.

The thread after passing between the posts 28, passes underneath theguiding roller 33, and through an oiling pad 34 which may be of anydesired construction. From the oiling. pad the thread, or threads, isled over a roller 35, and thence through guiding fingers at the end ofthe arm 36. This arm 36 is attached to the supporting plate 22. Thethread, after leaving the fingers at the end of the arm 36, passesunderneath a roller 37 carried at the outer end of an L-shaped arm 38.The portion 39 of the arm is formed with a collar which is freelyjournaled on a sleeve 41 projecting from the bracket 41 which is securedto the overhanging arm of the machine. The arm 39 is connected by a link42 to a rock lever 43. The rock lever 43 is carried by a short shaft 44on which is mounted a segment 45 adapted to be engaged by a rack 46carried by the presser bar. IVhen the presser bar is raised and lowered,this rack, through the segment, will swing the rock lever 43, andthrough the link 42, will shift the position of the thread guidingroller 37. The thread, after leaving the roller 37 passes over a roller47 which is carried by an arm 48. This arm 48 is formed with a collar 48which is fixed to a cross shaft 40 mounted in suitable arms 41 and 41formed integral with the bracket 41. The collar 48 is provided with asecond arm 50 which carries a ball stud.

An eccentric 51 mounted on the main shaft 5, coiiperates with aneccentric strap or link 52 which engages the ball stud, and thereby arock arm 48 is oscillated. The thread after leaving the roller or pin 47passes underneath a roller or pin 53. The roller or pin 47 as the rocklever 48 oscillates, will be drawn against the thread passing under therollers 37 and 53, and a certain amount of thread; drawn off. The amountof thread drawn off will vary with the thickness in the material for thereason that the roller 37 is shifted as the thickness of the materialvaries. The thread after passing the roller 53, is led through a threadclamp 54. This thread clamp as herein shown, consists of a plurality ofdisks which are normally spring-pressed together by a suitable spring55. In order that the thread clamp may be released to allow a freerunning of the thread at the proper time, a stud 56 projects beyond thebracket carrying the clamping-disks and an inward movement of this stud,will release the spring tension on the clamping disks. The shaft 40which is oscillated by the eccentric 51, carries a cam arm 57, and thiscam arm is so disposed as to move against the end of the stud 56 andcause a releasing of the tension. The inner face of the arm 57 is formedWith a cam shoulder, and therefore, the upward movement of the arm willrelease the thread clamps, While a downward movement of the arm willallow the spring to clamp the thread. lVhen the arm 57 is moving down-Ward, the rock lever 48 is moving toward the right, as viewed in Fig. 1,and thread is be ing pulled fromthe supply. It will therefore be seenthat the pulling action of the rock lever 48 occurs only when the threadclamps are closed, and when the rock lever is moving in the oppositedirection, to give up thread to the needles, the thread clamps are opento allow a free movement of the thread.

The thread after leaving the thread clamps passes underneath astationary pin 58 and then through thread guides in the outer end of aslack thread controlling arm 59. This slack thread controlling arm iscarried by the rock shaft 44, and therefore, the position of the armwill vary with the thickness of the material. lVhen the thickness of thematerial under the presser foot increases, the arm will be lowered andwhen the thickness of the material decreases, the arm will be raised.The thread runs from the slack thread controlling arm 59 to threadguides '60 in the upper end of the needle bar. WVhen the needle reachesthe upper end of its stroke, the stitch is set and thread is drawn fromthe supply. The amount of thread drawn from the supply will depend uponthe distance that the guides on the needle bar move above the guides onthe slack thread controlling arm 59. lVhen the thickness of the materialincreases, the arm 59 is lowered as abovenoted, and therefore, theguides on the needle bar will move a greater distance above the guideson the thread arm 59, and more thread will be drawn from the supply. Onthe other hand, when the thickness of the material decreases, the arm 59is raised and less thread is drawn from the supply. I, therefore, havein this slack thread controlling arm, and the guides at the upper end ofthe needle bar, automatic means for setting the stitch and pullingthread from the supply, the action of which varies according to thethickness of the material.

The thread after leaving the thread guides at the top of the needle bar,passes between thread guides 61 and 62. These th e d g e 1 and 2 are arid; y an adjustable plate 63 mounted on the needle controlling lever 64is pivoted at 65 to the head of the machine, and a link 66 is pivoted atone end to said lever, and at its other end to a block 67 carried by theneedle bar. This block 67 is so positioned that the pivotal point 6.8between the lever 66 and the block 67, will move from the horizontalplane above the pivotal point 69 between the lever 64 and the link 66,to a horizontal plane below the same. The result is that the lever 64will be oscillated twice for each reciprocation of the needle bar. Theupper end of the thread lever 64 is formed with a thread guiding eye 70which projects through a slot 71 in the face plate of the needle head.This thread eye 70 vibrates from one side of the thread guide 61 to theother side of the thread guide 62. The thread guide 61 is formed of twospaced members and likewise the thread guide 62 is formed of two spacedmembers, so that as the thread eye 70 passes first to one side and thenthe other of these guides, thread will be taken up by the thread eye 70,and will be given up as the thread guide moves to a point centrallybetween these thread guides 61 and 62. The thread is led from the guides61 and 62 to the needle eyes.

The operation of my device is as follows :The pull-off roller or pin 47moves into engagement with the needle thread upon the downward movementof the needle bar. The thread clamping devices are timed to grip thethread just as the points of the needles are entering the material, andthe pull-off roller or pin 47 continues its movement between the lug 32and pin 53, after the clamp 54 is closed and a certain amount of threadis pulled off from the supply. The clamping disks 54 grip the threaduntil the needle reaches the end of its stroke downward and starts toreturn, and as soon as the needle starts to return, said clamping disksare released. As soon therefore, as the needle starts to rise, thethread is given up by the pull-oft, and is free to be taken up by thethread controlling parts between said pull-ofl and the needle. Thisauxiliary thread pulled off by the roller or pin 47 is for the purposeof allowing the needle to move so as to place the eye thereof well abovethe work before the thread is drawn taut to set the stitch. The threadcontroller 59 is moved by the presser foot under varying thicknesses ofthe work, and when the thickness increases, said slack thread controllerwill be moved downward, giving up thread to the needle for the increasedthickness, and causing the needle to pull off -a sufficient additionalamount,

' which will accommodate the increased thickness in the material. Whenthe thickness n m te i l decreas s th slack hr ad @011- troller 59 willbe raisedand take up a cer-.

tain portion of the thread so that the needle will form a tight stitchon the decreased thickness of the material, and then said slack threadcontroller will cause the needle to continue to pull off a less amountof thread for the decreased thickness of the material. The thread guide60 at the upper end of the needle bar, operates to give up thread to theneedles on the down stroke thereof, and to take up thread as the needlemoves up, and to set the stitch and draw thread from the supply. Thethread eye on the forward end of the machine, moves first between thethread guides 62 and then the thread guides 61. As the needle startsdownward, the thread arm 64: is at the extreme right and thread has beentaken up and is being held by said arm. This thread is at once given upto the needle as it moves downward, so that the needle thread is removedfrom all strain. The guide 60 at the top of the needle bar also gives upfurther thread to the needle. Before the needle eye reaches thematerial, the eye 70 moves between the thread guides 61 at the left andtakes up the thread as the thread is given up by the guide 60 whichprevents the thread from buckling in front of the needle. In otherwords, the needle thread as the needle bar moves downward, is heldsubstantially taut so that the needle eye gradually slides down thethread and the thread does not kink or buckle in front of the point ofthe needle. As soon as the needle eye reaches the material, the threadis clamped by the clamping disks 54, and as the needle thread is beingdoubled upon itself by the formation of the needle loop, the eye 70 ismoved again to the right, and gives up thread to the needle. passesacross the center line and carries the thread against the guides 62 justprior to the needle reaching the lower end of its stroke. As the needleapproaches the lower end of its stroke, the previously formed needleloop, which is around the looper, is shed, and it is desirable at thistime to draw up this previously formed needle loop close to the underside of the material so that said loop is not liable to be engaged bythe looper as it again moves forward and furthermore, so that the needlebar in setting the stitch has less thread to draw up.

The arm 64 moving to the right, carries the needle thread against thethread guides 62 just about at the time the previous needle loop is shedfrom the looper, and said arm 64 will take up the needle thread, and aidthe needle in pulling up the previous needle loop close to the underside of the work. During this operation, the clamping disks 54 areclosed, and no thread can be drawn from the supply. rise, the threadclamps are opened. The

This eye 70, however,-

As the needle starts to.

arm 64 at once gives slack to the needle thread. At this time, threadmay also be taken from the auxiliary pull-off, that is, the roller orpin 47, as the thread clamps are opened, and the auxiliary pull-off sotimed that it is at the rear end of its stroke. After the looper is wellinto the needle loop, it is desirable to pull said loop up against thelooper. The thread arm 64 again carries the needle thread against thethread guides 61, as it moves to the left, and takes up the needlethread slightly ust at the time the loopers are well into the needleloops. This movement of the arm 64 also pulls through the guides thethread taken from the supply by the auxiliary pull-off. The arm 6d againgives up thread to the needle as it continues to rise, so that thesetting of the stitch is delayed until the needle is well toward theupward end of its stroke. This allows the eye of the needle to clear thematerial before the thread is pulled up to set the stitch. I

As the needle bar reaches the upper end of its stroke, the thread arm isagain moved to the right, carrying the thread against the guides 62, andthe pulling of the eye 70 on the thread, together with the pulling ofthe guide 60 on the needle bar, will set the stitch and draw thread fromthe supply for thenext stitch. It will therefore, be noted that thethread arm 64: takes up thread and gives up thread four times for eachcomplete stroke of the needle bar. It takes up the thread to preventbuckling in front of the needle on its downward stroke; it takes upthread at the end of the downward stroke to assist the needle in drawingup the previously shed needle loop; it takes up thread on the first partof the upward movement of the needle to draw the needle loop well uparound the looper; and it takes up thread at the upper end of the strokeof the needle bar, to assist the needle bar in setting the stitch andpulling thread from the supply.

The I clamping disks clamp the needle thread only at the time when thepreviously shed needle loop is being drawn up by the downward movementof the needle, and of the thread pulling arm 6%. At the time the threadis clamped, the auxiliary pull-off or roller 47 operates to pull aslight amount of thread from the supply, which is given to the needle onits upward movement so that the eye of the needle may move well abovethe work before the thread is drawn to set the stitch.

It will be apparent therefore, that I have provided a thread controllingmechanism which includes two independently operating pull-off devices,both of which are controlled by the varying thicknesses of the material,and these thread pull-off devices operate in succession. The threadpull-off roller or pin A7 operates on a'down stroke of the needle liewhen the thread is clamped to pull off a small amount of thread which isgiven to the needles to allow the eyes thereof to clear the materialwhen the stitch settting operation occurs, while the pull-off at theupper end of the needle bar operates upon the up- Ward stroke of theneedles and pulls off the more, by the above described mechanism,

wherein the needle and the thread controlling mechanism are operatedfrom an upper rotary shaft, there is little or no false Vibration in theparts of the machine, even though the needles are caused to penetrateheavy material and I am thereby able to avoid the skipping of stitchesor the making of loose or imperfectly controlled stitches.

It is obvious that minor changes in the details of construction may bemade, with-' out departing from the spirit of the invention as set forthin the appended. claims.

Having thus particularly described my invention, what I claim as new anddesire to secure by Letters Patent, is

1. A sewing machine including in combination, an overhanging arm, arotary shaft mounted therein, a needle reciprocated by said shaft,thread controlling mechanism for the needle thread including threadclamping means, a pull-off between the thread clamping means and thesupply means for positively operating said pull-off from said rotaryshaft, said pull-off being timed so as to pull thread from the supplywhile said clamping means is closed, and to give thread to the needle toallow the eye thereof to move above the material before the thread isdrawn taut to set the stitch.

2. A sewing machine including in combination, an overhanging arm, arotary shaft mounted therein, a needle reciproc'ated by said shaft,thread controlling mechanism for the needle thread including threadclamping means, a pull-off between the thread clamping means and thesupply means for positively operating said pull-01f from said rotaryshaft, said pull-off being timed so'as to pull thread from the supplywhile said clamping means is closed, and to give thread to the needle toallow the eye thereof to move above the material before the thread isdrawn taut to set the stitch, and means whereby the amount of threadpulled oif may be varied according to the thickness of the material.

3. A sewing machine including in combithe needle from said shaft, apull-off for the needle thread, a clamping device between the pull-offand the needle, common means actuated by said shaft for operating saidpull-off and said clamping device, said common means being so timed asto pull thread from the supply on the down stroke of the needle, and togive thread to the needle to allow the eye thereof to move above thematerial before the setting of the stitch occurs.

4. A sewing machine including in combination, an overhanging arm, arotary shaft therein, a needle, means for reciprocating the needle fromsaid shaft, a pull-ofl' for the needle thread, a clamping device betweenthe pull-01f and the needle, common means actuated by said shaft foroperating said pull-off and said clamping device, said common meansincluding devices so timed as to close the clamp prior to the threaddrawing stroke of the pull-off, and said common means being so timed asto pull thread from the supply on the down stroke of the needle and togive thread to the needle to allow the eye thereof to move above thematerial before the setting of the stitch occurs.

' 5. A sewing machine including in combination, an overhanging arm, arotary shaft therein, a needle, means for reciprocating the needle fromsaid shaft, a pull-off for the needle thread, a clamping device betweenthe pull-01f and the needle, common means actuated by said shaft foroperating said pull-off and said clamping device, said common meansincluding devices so timed as to close the clamp prior to the threaddrawing stroke of the 'pull-oif, means whereby the amount of threadpulled off may be varied according to the thickness of the material,said common means being so timed as to pull thread from the supply onthe down stroke of the needle, and to give thread to the needle to allowthe eye thereof to move above the materialbefore the setting of thestitch occurs.

6. A sewing machine including in combination, an overhanging arm, arotary shaft therein, a needle bar, a needle carried thereby, means forreciprocating the needle bar from said shaft, and thread controllingdevices for the needle including a pullofi' lever, a bracket located onsaid overhanging arm on which said pull-01f lever is mounted, threadguides cooperating with the pulloff lever, an eccentric carried by therotating shaft, and means for connecting the eccentric to the pull-offlever.

' 7. A sewing machine including in combination, an'overhanging arm, arotary shaft therein, a needle bar, a needle carried thereby, means forreciprocating the needle bar from said shaft, and thread controllingdevices for the needle including a pull-off lever, a bracket located onsaid overhanging arm on which said pull-off lever is mounted, threadguides cooperating with the pull-0E lever, an eccentric carried by therotating shaft, means for connecting the eccentric to the pull-0E lever,and means whereby one of the guides cooperating with the pulloff levermay be automatically shifted by the "arying thicknesses of the material.

8. A sewing machine including in combination, an overhanging arm, arotary shaft therein, a needle reciprocated by said shaft,

and thread controlling mechanism for said needle including a pull-ofl"lever, a bracket on which said pull-off lever is mounted, an eccentricon said shaft, means for oscillating the pull-off lever from saideccentric, thread clamping devices between said pull-off lever and theneedle, and means operated from said eccentric for controlling saidclamping devices.

9. A sewing machine including in combination, an overhanging arm, arotary shaft therein, a needle reciprocated by said shaft, and threadcontrolling mechanism for said needle, including a pull-0E lever, abracket on which said pull-off lever is mounted, an eccentric on saidshaft, means for oscillating the pull-off lever from said eccentric,thread clamping devices between said pulloff lever and the needle, meansoperated from said eccentric for controlling said clamping devices, saidpull-off lever operating means being timed relative to thethread-clamping means, so that the thread is clamped while the pull-offlever is drawing thread from the supply.

10. A sewing machine including in combination, an overhanging arm, aneedle bar reciprocating therein, a needle carried by the needle bar, apull-off for pulling thread from the supply and giving the same to theneedle on the upward-stroke thereof, a thread clamp between the pull-offand the needle, thread guides carried at the upper end of the needlebar, and devices for engaging the needle thread and taking up the sameon the first part of the downward movement of the needle to prevent thebuckling of the thread in front of the eye of the needle.

11. A sewing machine including in com- I bination, an overhanging arm, aneedle bar reciprocating therein, a needle carried by the needle bar, apull-off for pulling thread from the supply and giving the same to theneedle on the upward stroke thereof, a thread clamp between the pull-0Eand the needle, thread guides carried at the upper end of the needlebar, and devices for engaging the needle thread between the guides onthe needle bar and the needle eye for taking up the needle thread whenthe previous needle loop is shed from the looper, to assist the needlein drawing up said shed needle loop close to the under surface of thework.

12. A sewing machine including in combination, an overhanging arm, aneedle bar reciprocating therein, a needle carried by the needle bar, apull-off for pulling thread from the supply and giving the same to theneedle on the upward stroke thereof, a thread clamp between the pull-offand the needle, thread guides carried at the upper end of the needlebar, and devices for engaging the needle thread between the guides onthe needle bar and the eye of the needle for taking up the needle threadto assist the needle in setting the stitch, and drawing thread from thesupply.

13. A sewing machine including in combination, an overhanging arm, aneedle bar reciprocating therein, a needle carried by the needle bar, apull-off for pulling thread from the supply and giving the same to theneedle on the upward stroke thereof, a thread clamp between the pull-offand the needle, thread guides carried at the upper end of the needlebar, and devices for engaging the needle thread for taking up the needlethread on the first part of the upward stroke of the needles, givingslack to the needle while the eye is passing through the material, andtaking up the needle thread at the lower part of the stroke of theneedle, to assist the needle in drawing the needle loop shed from thelooper.

14. A sewing machine including in combination, an overhanging arm, aneedle bar reciprocating therein, a needle carried by the needle bar, apull-off for pulling thread from the supply and giving the same to theneedle on the upward stroke thereof, a thread clampbetween the pull-offand the needle, thread guides carried at the upper end of the needlebar, and devices for engaging the needle thread for taking up the sameon the first part of the downward movement of the needle, for givingslack to the needle as the eye is passing through the material, takingup the needle thread to assist the needle in drawing up the needleloop'shed from the looper, for taking up the needle thread on the firstpart of the upward movement of the needle, and giving slack thereto toallow the eye to move above the material before the thread is drawn toset the stitch.

15. A sewing machine including in combination, an overhanging arm, aneedle bar end of the'needle bar, and devices for engaging the needlethread for taking up the slack on the first part of the downwardmovement of the needle, for giving slack to the needle as the eye ispassing through the material, taking up the needle thread to assist theneedle in drawing up the needle loop shed from the looper, for taking upthe needle thread on the first part of the upward movement of theneedle, and giving the slack thereto to allow the eye to move above thematerial before the thread is drawn to Copies of this patent may beobtained for five eents each, by addressing the set the stitch, and fortaking up the needle thread when the needle bar reaches the upper end ofits stroke to assist the needle bar in setting the stitch; e

In testimony whereof I aifix my signature, in presence of two Witnesses.

DUDLEY S. SEYMOUR. Witnesses:

C. L. STURTEVANT, C. MCNEIL.

Commissioner of Patents,

Washington, I). G.

